. American engineer . ition to the steam from the exhaust pipe, the ex-haust from the air pump and from the hot water pump arealso carried through the heater and will keep the water hotwhile the locomotive is not moving, it will be noticed thatthere is a spring operated valve in the exhaust steam linebefore it reaches the heater which acts as a temperature regu-lator and will be seated when the pressure in the nest of tubesreaches a pre-determined point. There is also a safety valveat the opposite ;nd of the drum to prevent too large a pres-sure on the nest of tubes. In the cab are located thr
. American engineer . ition to the steam from the exhaust pipe, the ex-haust from the air pump and from the hot water pump arealso carried through the heater and will keep the water hotwhile the locomotive is not moving, it will be noticed thatthere is a spring operated valve in the exhaust steam linebefore it reaches the heater which acts as a temperature regu-lator and will be seated when the pressure in the nest of tubesreaches a pre-determined point. There is also a safety valveat the opposite ;nd of the drum to prevent too large a pres-sure on the nest of tubes. In the cab are located three extra gages, one showing thewater pressure :n tlie heater drum, one showing-the tempera-ture of the water in the heater, and the third in the Frencharrangement showing the pressure on the hot water feed pipe,l)ut in the .\merican j-daptation this gage shows the steam pres-sure on the pump line. The preliminary trips of this locomotive preceding the testruns, indicate that .he claimed abroad will be sub-. Consolidation Locomotive on the Seaboard Air Line Fitted with a Feed Water Heater. (;KR, lyiJ. AMERICAN ENGINEER S39 sUiiuiatcil Oil ono ul lla- runs wIrii the Irani uas a \\yrailo and the engine was wurkiiig to its capacity, the steaml>re>surc at the .imc being 185 lljs., the imiiip was started anddelivered water at 210 deg. temperature tn the and diir-iiig the time it was running the steam pressure continued trise. Under the same conditions if the injectors had been usedthe pressure would i robably have been reduced at least 10 5/4 in. nozzle is standard on these locomotives, and whenthe heater was first applied a 3 in. tip was inserted uith tlieidea that since a certain proportion of the steam passed tothe heater, a smaller tip would be necessary to give the desired Iraft. After the first trip, it was changed hack ti 4 1., andMil!the it is believed that it can be still further increased andmaintain a temperature of between 2(
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
